Electrical signaling mechanism.



No. 806,067. PATENTED Nov, 28, 1905.

D. H. OOKER.

ELECTRICAL SIGNALING MEOHAN ISM.

' APPLICATION FILED DE0.13,1904.'

' '2 SHEETS-SHEET 1.

No. 806,057. 7 PATENTBD NOV. 28, 1905. D. H. (JOKER.

ELECTRICAL SIGNALING MECHANISM.

APPLICATION FILED DEO.13,'1904.

' 2 snnms sngm z.

fi'wm m l U NITED sT'Ag Es PATENT OFFICE.

Specification of Letters Patent.

Application filed December 13, 1904. $eria11lo. 236,695.

To all whom it may concern.-

Be it known that 1, DAVID H. (JOKER, a citizen of the United States,residing at Piedmont, in the county of Calhoun and State of Alabama,have invented new and useful Improvements in Electrical SignalingMechanism, of which the following is a specification.

This invention relates to an electrical signaling mechanismwhe'reby asignal may be transmitted from an ofiice or other portion of a shop orestablishment to notify an ofiicial or employee that his attendance atsome certain point in a business or other establishment is Wanted.

The object of the invention is to provide a signaling system of thischaracter which is simple, reliable, and efficient and by which that thecalling-signal has been seen or heard.

With this and other objects in view the invention consists of the novelconstruction,

combination, and arrangement of parts hereinafter fully described andclaimed, reference being had to the accompanying drawings, in

which- Figure 1 is a perspective view of the box or casing containingthe signaling devices at the receiving-station at or near the point ofduty of the person to be called. Fig. 2 is a top plan View thereof, thetop of the box or casing being removed to show the signal mechanism onthe interior thereof. Fig. 3 isa vertical longitudinal section throughthe box or casing, and Fig. 4: isa diagrammatic view showing thesignaling devices at the calling and receiving stations and the circuitconnections.

Referring to Figs. 1, 2, and 3 of the drawings, the numeral 1 representsthe main portion of a box or casing designed to contain the signalingmechanism at the receiving or called station, which box or casing isshown in the present instance as of rectangular form and having anextension 2 from one side thereof terminating in a depending portion 3,forming a chamber for the reception and operation of the signalingdevice, the said portion 3 be- 1 ing provided in its front side with atransparout pane or panel 4, through which the said The box or casing asa' whole is closed at the top by a cover 5,

Patented Nov. 28, 1905.

having a rectangular main portion 6 to close I the portion 1 and anelongated portion 7 to close the portions 2 and 3. This cover may besecured in any preferred way to render it readily removable for thepurpose of applying, remov mounted to turn in adjustable bearings 12,

carried by a bracket 13, suitably secured to the casing adjacent themagnet 8. This disposition of the trunnions 11 provides lever 10 withlong and short arms 14 and 15, the armature 9 being secured tothe innerend of thelong arm 14:, adjacent to the bracket 13, while the short arm15 of said lever carries a weight 16 or analogous means for normallyholding the armature out of contact with the cores of the magnet andprojecting the arm 14 upward, as clearly shown in Fig. 3. To the outerend of the long arm-1 L is attached a link 17 from which issuspended astrip or bar 18, carrying a signaling device 19, (here shown in the formof a flag,) adapted to be raised and lowered by the movement of thelever to move it intoand out of register with the panel 4:, but whichmay be of any other form and construction to give the intended signal atthe called or receiving station. It will be understood that when themagnet 8 is energized the arm 9 will be drawn down,

thereby pulling the arm 14 of the lever downward against the resistanceof the weight 16, whereby the signal 19 will be forced downward ordepressed in the portion 3 of the casing and brought into view throughthe panel 4. When the magnet 8 is deenergized, the

which binding-posts are respectively in connection with the two sides orpositive and current to flow from the battery 26 to theelectromagnets 8and energize said magnets to set the signal 19 at the station E and tobreak said circuit to elfe'ct the restoration of said signal to itsnormal position. In the conductor 24 at the receiving-station B is abell 30 or other like signal, which is sounded when the signal 19 is.projected to call the attention of the employee or party signaled to thefact that said signal has been projected.

In the operation of the device it will be seen that a'person or officialat the calling or signaling station B may transmit a signal to thereceiving-station B to notify a' person at the latter station that he iswanted by simply closing the switch 27, which will project the signal 19in the manner previously described. It is desirable to provide meanswhereby the person called may transmit a return-signal back to thecalling-station to indicate that he has perceived the projected signal19, and to this end a return-conductor 31 is provided, which isconnected at one end, as indicated at 32, to the side 24 of the circuitA at the station B and is connected at its opposite endto a push-buttonor switch device 33, adapted to engage a contact 34:, connected at thestation B to the other side 25 of the circuit A, so that when the saidpush-button 33 is engaged with the contact 34 the outside conductor 31will be connected with the circuit A, and a current will pass throughthe said conductor. In the conductor 31 is a bell or other suitablesignal 35, located at the station B, and which will be sounded oroperated by the passage of an electric current through itsactuating-magnet when the push-button 33 is engaged with the contact3 1. By this means the called party at the receiving-station B maytransmit a signal back to the signaling-station B, indicating that thesignal previously transmitted from station B to station B has been seenor heard, after which the operator at the signaling-station B mayrestore normal condi tion by simply opening switch 27, as will-bereadily understood.

It will of course be understood that in place of the flag-signal 19 anannunciator or other similar signaling device may be employed at thereceivingstation B and a switchboard containing a series of push-buttonsor switch devices used at the signalingstation B- in place of the signalhand-switch 27 whereby the operator at the signaling-station may call upany one of a number of employees or persons at or near thereceiving-station. In this case of course each employee or person to becalled will be distinguished by a number or other arbitrary signalexposed by the actuation of one of the drops of the annunciator. Thisarrangement, however, will require no change in the return-signalingmeans, as the one push-button may be used for transmitting thereturn-circuit to the signaling-station.

From the foregoing description, taken in connection with theaccompanying drawings, the construction and mode of operation of theinvention will be understood without a further extended description.

Changes in the form, proportions,and minor details of construction maybe made within the scope of the invention without departing from thespirit or sacrificing any of the advantages thereof.

Having thus described the invention, what is claimed as new is 1. Asignaling system of the character described embodying signaling andreceiving stations, a circuit-controller at the signalingstation,acircuit governed by said controller, a casing at the receiving-stationprovided with end compartments arranged at different elevations, and aconnecting portion joining said compartments, an electromagnet arrangedwithin the upper compartment of said casing and connected with saidcircuit, an armature therefor, an eccentrically-pivoted signal-leverhaving its long arm connected with the armature and projecting throughsaid connecting portion of the casing into the lower compartmentthereof, and having its short arm disposed within the upper compartment,a signal connected to the long arm of the lever in the lowercompartment, the latter having an observation-panel to expose saidsignal when the long signal-arm is lowered, means connected with theshort arm of the lever within the upper compartment for normally holdingthe long arm thereof elevated, a return-conductor connected to thecircuit at one side of the battery at the signal-station, and a switchdevice for connecting said conductor to the circuit on the opposite sideof the battery at the receiving-station.

2. In a signaling mechanism of the character described, a casingprovided with a main compartment, a signaling compartment extendingbelow the plane thereof and provided in its lower portion with anobservation-panel, and an elongated extension connecting saidcompartments, an electromagnet arranged within the main compartment, anoperatinglever eccentrically pivoted within the main compartment andcarrying upon the-long arm thereof adjacent to the pivotal connection anarmature, the long arm of the lever extending through the connectingportion of the casing into the upper portion of thesignalingcompartment,aretracting-weightconnect- In'testimony whereof Iaflix my signature in I presence of two witnesses.

DAVID H. (JOKER.

Witnesses:

W. A. BARKER, E. S. FORMBY.

